How to work battery charger?
Thread Starter
Instructor
Joined: Feb 2010
Posts: 202
Likes: 0
From: The Chi
How to work battery charger?
Is it safe to put the charger on the battery while the battery is connected to the car.
The thing i have does 6v, 12v slow, 12v fast, boost.
Is it safe to connect the charger while its still connected to the car and leave it on 12v slow?
How long is safe?
The thing i have does 6v, 12v slow, 12v fast, boost.
Is it safe to connect the charger while its still connected to the car and leave it on 12v slow?
How long is safe?
Cruising
Joined: Mar 2010
Posts: 10
Likes: 0
if the charger that you have has a capability to float the charge once the battery gets to a full charge then yes you can connect it up and leave it. if there is no float capability then I would not leave it connected for more than a few hours unless the charger is delivering 1 amp or less to the battery. what brand charger and what current is delivered on 12V slow?
Drifting
Joined: Apr 2009
Posts: 1,617
Likes: 205
From: Westerville Ohio
Make sure you know if it's a float charger or not or you could ruin your battery very quickly.
Generally speaking, you can get a better charge if you go slower, so unless your looking for a quick jump, from your choices i'd go with 12V slow.
Generally speaking, you can get a better charge if you go slower, so unless your looking for a quick jump, from your choices i'd go with 12V slow.
Administrator
Joined: Mar 2001
Posts: 368,608
Likes: 24,864
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '26
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
if the charger that you have has a capability to float the charge once the battery gets to a full charge then yes you can connect it up and leave it. if there is no float capability then I would not leave it connected for more than a few hours unless the charger is delivering 1 amp or less to the battery.
That's why battery tenders/maintainers are so useful.
Le Mans Master
Joined: Jan 2004
Posts: 9,488
Likes: 1,743
From: Knoxville Tn
There's no need to disconnect the battery from the car.
The charger has two leads. One red one black.
The Red lead goes on the positive (+) terminal.
The black lead on the negative (-) terminal.
Put leads on the battery then either turn on charger or plug it in at this point. If there is a gauge on the charger, the needle on the gauge should move when charger is plugged in (turned on). If it doesn't, one of the connections is not properly connected.
A coup[le of hours charge shuld be enough to start the car if the charger is a non trickle charger. If it's a trickle charge it may take over night.
The charger has two leads. One red one black.
The Red lead goes on the positive (+) terminal.
The black lead on the negative (-) terminal.
Put leads on the battery then either turn on charger or plug it in at this point. If there is a gauge on the charger, the needle on the gauge should move when charger is plugged in (turned on). If it doesn't, one of the connections is not properly connected.
A coup[le of hours charge shuld be enough to start the car if the charger is a non trickle charger. If it's a trickle charge it may take over night.
Drifting
Joined: Apr 2009
Posts: 1,617
Likes: 205
From: Westerville Ohio
